Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-09-29
JHEP 0602 (2006) 016
Physics
High Energy Physics
High Energy Physics - Theory
23 pages, 6 figures. Published version. Added references
Scientific paper
10.1088/1126-6708/2006/02/016
We study the stability of extra dimensions in string gas cosmology at late times. Vacuum energy and, interestingly, baryons lead to decompactification after they become dynamically important. The string gas can stabilise the effect of baryons, but not that of vacuum energy. However, we find that the interplay of baryons and strings can lead to acceleration in the visible dimensions, without the need for vacuum energy.
Ferrer Francesc
Räsänen S. S.
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